|Title|Release date|Developer(s)|Publisher(s)|Genre(s)|
|---|---|---|---|---|
|187 Ride or Die|2005-08-23|Ubisoft|Ubisoft|Driving|
|50 Cent: Bulletproof|2005-11-17|Genuine Games|Sierra Entertainment||
|50 Cent: Blood on the Sand|2009-02-20|Swordfish Studios|THQ||
|25 To Life|2006-01-17|Avalanche Software, Ritual Entertainment|Eidos Interactive||
|Gangland (video game)|2004-02-14|MediaMobsters|Whiptail Interactive||
|Gangsters: Organized Crime|1998-11-30|Hothouse Creations|Eidos Interactive||
|Gangsters 2|2001-06-01|Hothouse Creations|Eidos Interactive||
|The Godfather: The Game|2006-03-21|EA Redwood Shores|Electronic Arts||
|The Godfather II|2009-04-07|EA Redwood Shores|Electronic Arts||
|Grand Theft Auto III|2001-10-22|DMA Design|Rockstar Games||
|Grand Theft Auto: Vice City|2002-10-22|Rockstar North|Rockstar Games||
|Grand Theft Auto: San Andreas|2004-10-24|Rockstar North|Rockstar Games||
|Mafia: The City of Lost Heaven|2002-08-28|Illusion Softworks|Gathering of Developers||
|Mafia II|2010-08-24|2K Czech, Massive Bear Studios|2K Games, 1C Company||
|Mob Rule|1999-9-30|Simon & Schuster Interactive|Studio 3 Interactive||
|Saints Row|2006-08-29|Volition|THQ||
|Saints Row 2|2008-10-14|Volition, Inc.|THQ||
|Omerta - City of Gangsters|2013-01-31|Haemimont Games|Kalypso Media|Building Simulation, RPG|

Question: number of gangster games released by developer rockstar north
Answer: 2